I'd maybe put a slight border round your whole main container.
I don't like the buttons
On the right nav bar, I'd push the text in a little bit from the left side, or perhaps use an image icon beside each one. Also you have Bloga> at the top.
Footers messed up - and is right at left of page.
I also prefer justifying all main page text. it makes it look more pretty IMO. it's a bit harder to read, but for small paragraphs like that it should be okay.
I'm exhausted from this heat and going to go nap for a bit, I'll be back later and hopefully will be more clearer, so if theres anything specific you need help on just ask.
Oh - I don't like the header at the top of the page. It might just be the banner ad squashed in there, but it seems too thin for that layout, and looks just a tad amateurish.